Classificatie / Names
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Cyprinodontiformes (Rivulines, killifishes and live bearers) >
Nothobranchiidae (African rivulines)
Etymology: Nothobranchius: Greek, nothos = false + Greek, brangchia = gill (Ref. 45335); itigiensis: The specific name is given in reference to Itigi township in central Tanzania, near which place the type locality is situated; an adjective derived from the geographical name (Ref. 123150).
Environment: milieu / climate zone / depth range / distribution range
Ecologie
; zoet water benthopelagisch; pH range: 7.9 - 8.4. Tropical; 24°C - 25°C (Ref. 123150)
Africa: ephemeral pools and marshes of upper Ruaha drainage and Bahi Swamp area in Tanzania (Ref. 123150).
Grootte / Gewicht / Leeftijd
Maturity: Lm ? range ? - ? cm
Max length : 4.3 cm SL mannelijk / geslacht onbekend; (Ref. 123150)
Korte beschrijving
Morfologie | Morfometrie
Dorsale stekels (totaal): 0; Dorsale zachte stralen (totaal): 16-18; Anale stekels 0; Anale zachte stralen: 16 - 19. Diagnosis: Nothobranchius itigiensis belongs to the N. ugandensis species group presenting the following combination of characters in males: body colouration light blue with red to red-brown scale margins; frontal part of head red-brown and throat light blue or red; caudal fin uniform red; anal-fin base light blue or yellow with red-brown spotted pattern (Ref. 123150). Nothobranchius itigiensis differs from all other members of the N. ugandensis species group by an anal fin yellow with red-brown spots proximally, that are merged medially to a pattern parallel to fin rays and may be fused distally to form a slender marginal band; caudal peduncle length 14.9-15.7% of standard length vs. 16.1-23.8%, and 96-103% of its depth vs. 111-157%; and head width 68-72% of its depth vs. 73-83% (Ref. 123150).
The type locality is an ephemeral pool formed in the marshy terrain drained by the Mlumbi and Kisigo streams; an extensive pool of about 50 m wide; the water was turbid, the bottom of the pool not visible (Ref. 123150).
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
Nagy, B., B.R. Watters, P.D.W. van der Merwe, F.P.D. Cotterill and D.U. Bellstedt, 2020. Review of the Nothobranchius ugandensis species group from the inland plateau of eastern Africa with descriptions of six new species (Teleostei: Nothobranchiidae). Ichthyol. Explor. Freshwat. 30(1):21-73. (Ref. 123150)
Status op de Rode Lijst van het IUCN (Ref. 130435)
Gevaar voor de mens
Harmless
Gebruik door de mens
Visserij:
Meer informatie
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Estimates based on models
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Trofisch niveau (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
